. so you are right-You got it right.......
When the apple fell he realized that gravity could be that force and rushed to calculate the implications of that thought.
There can be a change in velocity without a change in speed.
Velocity is a vector, and thus has both a magnitude (like meters per second) and a direction. Speed just has a magnitude.
If the magnitude isn't changing (i.e the meters per second stays fixed) but the direction is changing, then the velocity is changing, and can be classed as acceleration.
In uniform circular motion, the acceleration is given by:
a = V^2/r
Yes and no. satellites orbit the Earth by "falling" around it.
Since the Earth is round, the objects orbiting around it probably does NOT follow a straight-line path. It follows the curvature of the Earth. The Earth curves approximately 5 meters downward for every 8000 meters along its horizon.
So I think even it moves at a constant speed, the direction is changing/it is accelerating.
if its orbiting at a CONSTANT speed then it is not accelerating... so you are right
You got it right.
